/* 窗口太小提示样式 */
.viewport-warning {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary, #ffffff);
    z-index: 99999;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    padding: 40px 20px;
    text-align: center;
}

.viewport-warning-icon {
    font-size: 80px;
    margin-bottom: 30px;
    color: var(--text-secondary, #666);
}

.viewport-warning-title {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-primary, #333);
    margin-bottom: 16px;
}

.viewport-warning-message {
    font-size: 16px;
    color: var(--text-secondary, #666);
    line-height: 1.6;
    max-width: 400px;
}

/* 在小屏幕上显示提示，隐藏主要内容 */
@media (max-width: 1360px) {
    .viewport-warning {
        display: flex;
    }
    
    .header,
    .main-content,
    body > *:not(.viewport-warning) {
        display: none !important;
    }
}

/* 深色模式适配 */
[data-theme="dark"] .viewport-warning {
    background: var(--bg-primary, #1a1a1a);
}